In this question, we need to choose the grammatically correct sentence. Let’s break down each option:
Option (1): "Why should the students be afraid of English language is not clear."
This sentence is incorrect because the word order is wrong. The word "is" after "language" does not follow the correct subject-verb agreement.
Option (2): "Why should be the students afraid of English language is not clear."
This sentence is incorrect because the subject "students" should come before the auxiliary verb "be." The correct order would be: "Why should the students be afraid..."
Option (3): "Why are the students afraid of English language is not clear."
This sentence has a grammatical error in the structure. The question part "Why are the students afraid of English language" should be followed by the part "is not clear" with proper punctuation or sentence structure, which makes this choice incorrect.
Option (4): "Why the students should be afraid of English language is not clear."
This is the correct answer. The word order is correct, and the sentence maintains subject-verb agreement. This option is grammatically correct because the statement is formed properly without ambiguity.
Thus, Option (4) is the correct choice.